How many closed rectangular boxes are there in the following figure?

The atoms of Germanium, Arsenic, Selenium and Bromine contain ...... shells.

Name the country which will host the 2019 Combined World Cup for shooting?

The LCM and HCF of two numbers are 4284 and 32, respectively. If one of the numbers is 672, then the second number is;

Read the statement below followed by two arguments.
Statement:
Should there be strict laws for maintaining ponds and lakes?
Arguments:
I. Yes, it will naturally maintain the water level for generations to come. It affects the migration of birds too.
II. No, it comes in the way of modern urban development and growth. Which argument(s) of the below is/are strong in the context of the statement?

If a-1a=7,then a2+1a2=?

Find the odd one out.

Name the viceroy who inaugurated New Delhi as the new capital of India in the year 1931.